I recently purchased a 2000 TA and the 4 wire alternator plug has been cut and wired directly to the fuse panel. I'm assuming the PCM was not sending a charge signal to the alternator. Anyone ran across this before?

 

I've seen something similar. The diagrams for the staring and charging systems can be found here: https://www.mediafire.com/?40mfgeoe4ctti

You can see for this 2000 diagram where the 4 terminals on the alternator (generator) go to towards the middle right of the diagram. Left click on the image to zoom in.